Name
 | URL | Country
| Market Cap (US$)
|
|---|
| GDF Suez | http://www.gdfsuez.com | France | 53,222 |
| Enbridge Inc. | http://www.enbridge.com | Canada | 15,224 |
| The Hong Kong & China Gas Co., Ltd. | http://www.hkcg.com | Hong Kong | 15,013 |
| Sempra Energy Corporation | http://www.sempra.com | United States | 14,056 |
| Snam Rete Gas SpA | http://www.snamretegas.it | Italy | 11,501 |
| A2A SpA | http://www.a2a.eu | Italy | 9,663 |
| Airgas, Inc. | http://www.airgas.com | United States | 4,617 |
| Energen Corporation | http://www.energen.com | United States | 3,813 |
| Southern Union Company | http://www.southernunionco.com | United States | 3,168 |
| Toho Gas Co., Ltd. | http://www.tohogas.co.jp | Japan | 3,137 |
| AGL Resources Inc. | http://www.aglr.com | United States | 2,519 |
| Atmos Energy Corporation | http://www.atmosenergy.com/ | United States | 2,471 |
| Fluxys SA | http://www.fluxys.be/ | Belgium | 2,362 |
| Piedmont Natural Gas Company, Inc. | http://www.piedmontng.com | United States | 2,166 |
| Gas Natural E.S.P | http://www.gasnatural.com/ | Colombia | 1,826 |
| Gaz Metropolitan & Company Limited Partnership | http://www.gazmetro.com/ | Canada | 1,797 |
| WGL Holdings, Inc. | http://www.wglholdings.com/ | United States | 1,626 |
| Northwest Natural Gas Company | http://www.nwnatural.com | United States | 1,295 |
| Southwest Gas Corporation | http://www.swgas.com | United States | 1,289 |
| Laclede Group Inc., | http://www.lacledegas.com | United States | 964 |
|
